小麦土传花叶病,群众称“黄叶病”,1965年在我县就有发现,因发病零星,危害轻,未引起重视。近年来随着感病品种的推广,发病面积逐年扩大,危害程度逐渐加重,损失很大。一、分布与危害小麦土传花叶病主要发生在信阳地区的固始、潢川、息县、淮滨、商城、光山和信阳等县、市,其中以固始、潢川发生最严重,驻马店、南阳和许昌地区的部分县也有零星发生。 Wheat soil mosaic disease, the masses called “yellow leaf disease”, 1965 found in our county, due to incidence of sporadic, endanger the light, did not pay attention. In recent years, with the promotion of susceptible varieties, the incidence of the area has expanded each year, the degree of harm gradually increased, a great loss. First, the distribution and damage Wheat soil Mosaic disease occurs mainly in Xinyang region Gushi, Huangchuan, interest County, Huaibin, Mall, Guangshan and Xinyang counties, cities, of which Gushi, Huangchuan most serious, Some counties in Zhumadian, Nanyang and Xuchang also have sporadic occurrences.